Final answer:
PID encompasses infections of the female upper genital tract, which include the uterus, cervix, fallopian tubes, and ovaries.
Step-by-step explanation:
Pelvic inflammatory disease (PID) is an infection of the female reproductive organs including the uterus, cervix, fallopian tubes, and ovaries. The most serious form of PID is inflammation of the fallopian tubes, called salpingitis. Symptoms of PID can vary between women and include pain in the lower abdomen, vaginal discharge, fever, chills, nausea, diarrhea, vomiting, and painful urination.